Gamble reward for crafting work orders

Ok so i maybe spent 100 plat doing work orders and no plaque ,maybe just really unlucky.
everyone likes a flutter now and again so why not when handing in workorders ,gives us crafter some nice incentive to actually make the work orders fun.
say when u hand in your workorder to the npc you get a standad cash reward of say scalable plat rewards depending on the level of work order accomplished.
then the npc would ask you ."would you like to gamble"
a random card or some form of numerical dice would show and you have to guess higher or lower.
reward loot could be a pick of plat, plaques or gear.
regards ..